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<!DOCTYPE html>
<html>
<head>
<title>Synthesizers 101</title>
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<body>
<textarea id="source">
class: center, middle
# Synthesizers 101
---
# What is a synth?
<iframe width="420" height="315" src="http://www.youtube.com/embed/VXa9tXcMhXQ" frameborder="0" allowfullscreen></iframe>
---
# Whoooo Are Huuuuuuuuuugh?
@hughrawlinson
Student of Music Computing at Goldsmiths
Developer of Web at many places
Founding President of Hacksmiths
---
# What is a synth?
* Digital or Analog
* Multiple Paradigms
* Subtractive
* Additive
* Frequency Modulation
* Granular
---
# What is a subtractive synth?
* Takes a signal from an Oscillator
* Passes it through a series of components that subtract from the signal
---
# Signals
* Continuous streams of values
* Digitally represented as an array of N bit values
* Electronic trickery makes these work
* Composed of many Sine waves at various phases and velocities at any one point
---
# Pitched signals
* Follow a harmonic structure
* has a sine wave at the 'fundamental' frequency
* contains sine waves at various multiples of the fundamental frequency
---
# Oscillators
* Generate the waveforms
---
# DEMO
---
# Filters
They 'filter' part of the harmonic content out of the sound.
* Various types
* Low Pass
* High Pass
* Band Pass
* Band Reject
---
# DEMO
---
# Envelope generator
Controls the volume of the sound over time.
---
# Putting it all together demo
</textarea>
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